When the water level in the Danube in central Budapest is low enough, there is a secret site telling the history of one of the most iconic bridges of the city.

At one of Oslo’s most-visited buildings, few notice the painting that has mocked its architect for 70 years.

Since 1877, the characters of Sir Walter Scott’s “Ivanhoe” have been keeping time in this Leeds arcade.

A solitary arbor with a unique pedigree.

Today, Kent's medieval monarchs hold court on a busy pedestrian thoroughfare—or at least their statues do.

This statue honors the groundbreaking writer for being the first female to support herself solely through her writing, as well as her time as a spy

An impressive armored bronze effigy marks the tomb of one of the medieval era's greatest warriors.

This figure was carved in the likeness of a voyeur, so that every time he spied across the street, he would find only himself staring back.

The enchanting archway is the only surviving portal into Dublin’s lost medieval wall.

Europe's "only museum dedicated to the decapod" is full of quirky and absurdist displays, including one featuring the "famous" Giant Crab of Margate.

These tiny effigies are believed to represent victims of Edinburgh’s notorious Anatomy Murders.

A floating cat sanctuary on an Amsterdam canal.

This ancient oak plays host to carvings of magical elves, gnomes, witches, and other creatures prominent in local folklore.

Once silenced for being off-key, this bell has found a new voice as an interactive public artwork.

A familiar otherworldly creature guards this 12th-century Scottish abbey.

A war memorial dedicated to the Free French Naval forces of World War II.

An urban megalith steeped in local lore.

The narrowest house in the U.K.

Several plaster noses are hidden in plain sight around London's Soho neighborhood.

Across Valencia lie the remains of three ancient fortifications built centuries apart: a Roman enclosure, an Islamic expansion, and a medieval Christian wall.

On this spot Lord Kelvin allegedly discovered absolute zero.

Charming small streets lined with well preserved wooden houses dating to the 18th and 19th century.

The original shop where the iconic Belgian praline was invented.

A ruined castle revived by a glove magnate, home to countless tales of bad luck, romance, and war.